Scraper for disks.



R. M. MILLER.

SCRAPER FOR DISKS.

APPLICATION FILED JULY 12. 1912.

Patented. Nov. 16, 1915.

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RALPH M. MILLER, 0F PEOBIA, ILLINOIS, ASSIG-NOR TO PEO RIA DRILL & SEEDER COMPANY, OF PEOBIA, ILLINOIS, A CORPORATION OF ILLINOIS.

sonarnn non nIsKs.

Application filed J uly 12, 1912.

provements in Scrapers for Disks, of which the following is a specification.

My invention relates to disk seed drills and particularly to cleaning or scraping parts therefor.

When a disk seed drill is operated in wet weather or in heavy or sticky soil it has been found advisable and necessary to provide devices for scraping the surfaces of the disks near their peripheries to clean the disks of the mud or other material adhering thereto, so that the edges of thedisks will not be prevented from entering. the soil a proper distance for seeding. These scraping or cleaning devices usually consist of blades having sharpened edges which are yieldingly held against the surfaces of the disks at an angle thereto, W here a drill has been eX- posed to wet weather forsome timeor is i used in heavy or sticky soil, the surfaces of the disks become rusty and a thin coating of dirt will collect on the disks, thereby lifting the scraper off the surface of the disks and allowing the disk to revolve without being cleaned. To prevent this it is desirable to reverse the scraper and use the other edge which, as the result of prior use, is sharper and will act efficiently to clean the disks from rust, dirt and. other substances.

The object of my present invention isto provide a scraper which may be readily reversed and which. in either position will be held at the same inclination to the disks and with the same pressure.

A further object of my invention is the provision of a simple locking and securing means which holds the scraper securely on its locking lever and prevents accidental dis placement or disengagement.

To the accomplishment of the .foregoing and such other objects as, may hereinafter appear, my invention consists in the construction,combination and arrangement of parts hereinafter described and then sought to be defined in the appended claims,.reference being had to the accompanying drawing forminga part hereof, which for the purpose of illustrative disclosure shows anem bodiment of my invention, it being understood howeverthat changes may be made in Specification of Letters Patent.

Patented Nov. 16, 1915.

Serial No. 709,116.

practice within the scope of the claims without digressing from my. inventive idea.

In the drawings: Figure 1 represents a side elevation ofthe seeder disk with myinvention applied thereto. Fig. 2 is a perspective view of the scraper blade. Fig. 3 is a plan view of the scraper blade and the holding lever. Fig. 4: isa perspective view of one extremity of the holding lever, and Fig.

5 is a central longitudinal section thereof.

My invention generally comprises a hold ing lever which is pivotally mounted on the grain spout casting and has aspring pressure exerted at one end to yieldingly force the other end toward the disk. The other end of the lever is formed-as one part of a two part connection for the scraper blade to which the other part of said connection is attached. The extremity of the holding lever is in the form of a bifurcated hook having a lug extending outwardly from the bifurcation to form an abutment. This hook forms a bearing and-in it isadaptedto rest the corresponding part of the connection which is secured to the scraper blade and hook portions of the holding lever and the bearing arms or members, the extremities of which are turned upwardlyto provide stops to engage the abutment and properly position the scraper blade relative-to said disks. The connecting part, which .is attached to the scraper blade, is made reversible sothat by removing it from its bearing in the end of the holding lever and reversin it, it will be secured therein in the same position relative to therdisk, thereby assuring that the scraper blade will always operate in the same manner on the disks.

Referring now to the drawings for a particular description of my device, the numeral l designates the grain spout casting having the draw bar connection 2, and also the disk 3 mounted thereon, these parts all being of-the usual and conventional con struction. The casting 1 is further provided with the apertured lug 4, it beingunderstood that thislug is duplicated on the side opposite to that shown. ,This casting also has the aperture 5 therethrough which pering levers 8, encircling the studs 9 thereon. As the levers Sam the same in construction and operation and are merely duplicated. on

opposite sides of this device it is only deemed necessary to describe and show one of'them. Each lever is provided intermediately thereof with the extended stud which has a bearing in the apertured lug el,

being held therein by the cotter pin 11.

V This provides the pivot for the holding lever whereby the lowerextremity thereof may be moved to and from the disk during the operation of the device. A scraper member is adapted to be removably secured to said holding lever and to this end I provide the scraper blade 12 "which is attached to the holding member 13, this member being soformed as to provide one part of the two part connection or coupling, the other part of said connection or coupling being formed 1 by the end ofthe holding lever.

In the device illustrated, the lower extremity ofthe holding lever 8 is made in the form of a'hook 14 which is bifurcated to'provide the spaced extensions 15, having projecting outwardly therebetween the abutment l6 whichhas the square outer face 17 and the inner bearing face 17 at right anglesthereto. This member 8 also has the upper hook extensions or prongs 18 which are spaced as atf19. A groove or depression 20 which forms a substantial extension of the spaces between the prongs of said hooks is formed in said member. This forms one member or part of the two part coupling,

the otherpart-being formed by the blade bearing surfaces 23 terminating in the upturned projections or extensions 24, the inner surfaces 25 of which are substantially at right angles with regard to the surfaces 23". Between said arms 23 is providedthe roundedextension 26 which is reducedon its opposite sides to form the pintles or studs 27 leaving the shoulders 28.

.In assembling the device the pintles bear in the spaced hook portions of the lower extremity of the lever with one arm 23 of the elongated member 22 fitting in the space between said hooks, the fiat bearing surface a23 -bearing against the flat surface 17 on the abutment l6 and thereby determining the inclination of the scraper relative to the leverand disk. Therounded extension 26 fits in'the groove or depression 20 to assist 1n preventing relative lateral displacement.

The upward extension or projection 24 has its inner fiat face 25 bearing against the square end 17 of said abutment 16 to form a lock to hold the parts securely in engagement and prevent them disassembling. This is due to the action of the spring by forcing the lower end of the lever 8 inwardly until the scraper edge engages the disk. This in terlocking relation of the pintles engaging in the hook and the upward extension or projection engaging the abutment, locks and holds the blade holding member in the end of the lever at a predetermined inclination to the disk.

In order to remove the blade and its holder, it is necessary to swing the lower extremity of the lever outwardly away from the disk until the projection or extension 2-1 can clear the end of the abutment, thus breaking the locking relation, which normally exists due to the action of the spring forcing the inner end of the lever inwardly so that the blade engages the disk and the extension or projection 2 1 engages the end of the abutment 16. The blade holding member is removed from engagement with the hook portion of the lever and reversed and then replaced in position again. As the parts of the blade holding member are duplicated it fits in exactly the same manner as before and will be held and locked at the same angle and position relative to the disk. The spring 6 normally tends to force the lower end of the lever inwardly, the scraping edge of the blade bearing against the disk as shown in Figs. 1 and 3. This being the case, the upturned extension or projection'24 bears on and is always held in tight engagement with the face 17 of abutment 16 as shown, so that the angular relation between the scraper and lever and the scraper and disk is always the same and the parts locked securely together, the projection 24 and end of abutment 16 serving as a positive means for preventing accidental or unintentional displacement or disengagement of the parts.

It is obvious that by providing this simple form of connection or hearing between the holding lever and the blade that I have produced a device which operated efficiently and effectively to produce the result desired. The blade is capable of being readily reversed as the parts of the blade holding member are duplicated and not only that, but should one part be broken the other part may be used to form the connection with the lever.

That I claim is 1. A scraper for a disk, comprising a lever having a bifurcated hook portion at one end and an abutment at the termination of said bifurcation, a scraper member having a holding and positioning means, said means including pintles adapted to have a bearing in said hook and an extension or projection adapted to bear against said abutment.

2. A scraper for a disk, comprising a lever having a bifurcated hook portion at one end and an abutment at the termination of said bifurcation, a scraper member having a holding and positioning means, said means including pintles adapted to have a bearing in said bifurcated hook, arms adapted to be positioned in said bifurcation and projections or extensions adapted to engage said abutment.

3. A scraper for a disk, comprising a lever having at one end a bifurcated hook portion and an abutment at the extremity of said bifurcation, said abutment having a square outer end and a flat inner surface at right angles thereto, a scraper member provided with holding and positioning means, said means including pintles adapted to have a bearing in said bifurcated hook, arms adapted to be positioned in said bifurcation, the upper surface of said arms being flat and adapted to engage the fiat inner surface of said abutment and the end of said arms being provided with upturned projections or extensions having flat inner surfaces adapted to engage the end of said abutment.

l. A scraper for a disk, comprising a lever having a bearing and an abutment formed at one end, a scraper member provided with reversible holding and positioning means, said means including pintles adapted to be positioned in said bearing and duplicate projections or extensions adapted to engage said abutment in either position so as to hold said scraper member at the same angle relative to said lever in either position.

5. A scraper for a disk, comprising a lever having a bearing and an abutment formed at one end, a scraper member provided with reversible holding and positioning means, said means including duplicate pintles adapted to rest in said bearing and duplicate arms extended at right angles to said pintles, each of said arms having an upturned extension or projection at its end adapted to engage said abutment.

G. A scraper for a disk, comprising a lever having a bifurcated hook portion at one end with an abutment at the termination of said bifurcation, a scraper member having re versible holding and positioning means,said means including duplicate pintles on opposite sides thereof adapted to rest in the hearing formed by said bifurcated hook, said means also having duplicate extended arms provided at their extremital portions with upturned projections or extensions in the form of lugs to engage said abutment.

7. A scraper for a disk, comprising a lever having at one end an opening forming a bearing and an abutment, a scraping member, pintle members attached to said scraping member and adapted to have a reversible relation and bearing in the opening in said lever, and lugs also attached to the scraper and adapted to bear against said abutment.

8. A scraper for a disk, comprising a lever having at one end a hook portion formed with an opening extending transverse to the axis of the lever, which forms a bearing, said lever also having a slot or opening at right angles to said first mentioned opening, an abutment at the base of the slot or opening, a scraping member, means attached to said scraping member adapted to have a detachable and reversible bearing in the first mentioned opening in the lever, and a lug on said means adapted to enter the slot or opening in the lever and engage the abutment thereon.

9. A scraper for a disk, comprising a lever adapted to be pivotally mounted, a scraper, the lever provided at one end with an opening forming a bearing, the scraper provided with means adapted to be journaled in said bearing, a spring for yieldingly holding the lever in a position to cause the scraping edge to engage the face of a disk, .and abutting portions onthe scraper and lever for determining the angular relation between the scraper and lever the abutting portions of the scraper being duplicated on opposite sides thereof, whereby the position of the scraper may be reversed in the bearing.

10. A scraper for a disk, comprising a lever, adapted to be pivotally mounted and having at one end a bifurcated hook portion and an abutment at the termination of said bifurcation, a scraper member having a locking and positioning means, said means in cluding pintles adapted to bear in said bifurcated hook, arms adapted to be positioned in said bifurcation, and projections or extensions on said arms adapted to engage and bear on the end of said abutment to lock the parts in position, and a spring for yield ingly holding the lever in a position to cause the scraper edge to engage the face of the disk and to hold said projections or extensions in engagement with said abutment.

In testimony whereof I affix my signature, in presence of two witnesses.

RALPH M. MILLER.

Witnesses GEORGE I. BEAN,v MILDRED F. BOMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0; 

